Global patent index - EP 1027657 A1

EP 1027657 A1 2000-08-16 - A FULLY-PIPELINED FIXED-LATENCY COMMUNICATIONS SYSTEM WITH A REAL-TIME DYNAMIC BANDWIDTH ALLOCATION

Title (en)

A FULLY-PIPELINED FIXED-LATENCY COMMUNICATIONS SYSTEM WITH A REAL-TIME DYNAMIC BANDWIDTH ALLOCATION

Title (de)

PIPELINE-KOMMUNIKATIONSSYSTEM MIT FESTER LATENZ-ZEIT UNTER VERWENDUNG VON DYNAMISCHER ECHTZEIT-BANDBREITENZUWEISUNG

Title (fr)

SYSTEME DE COMMUNICATIONS A TEMPS D'ATTENTE FIXE ET A BUS PIPELINE INTEGRAL ASSURANT UNE AFFECTATION DYNAMIQUE EN TEMPS REEL DE LARGEUR DE BANDE

Publication

EP 1027657 A1 (EN)

Application

EP 98936927 A

Priority

  • US 9815006 W
  • US 92436897 A

Abstract (en)

[origin: WO9913405A1] The present invention provides for an on-chip communications method with fully distributed control combining a fully-pipelined, fixed latency, synchronous bus (35) with a two-level arbitration scheme where the first level of arbitration is a framed, time division multiplexing arbitration scheme and the second level is a fairly-allocated round-robin scheme implemented using a token passing mechanism. Both the latency and the bandwidth allocation are software programmable in real-time operation of the system. The present invention also provides for a communication system where access to a shared resource (10, 15, 20) is controlled by the communications protocol. Access to and from the shared resource (10, 15, 20) from the subsystem is through a bus interface module (40, 45, 50, 55, 60). The bus interface modules (40, 45, 50, 55, 60) provide a level of indirection between the subsystem (25, 30) to be connected to the shared resource (10, 15, 20). This allows the decoupling of system performance requirements. Communication over the bus (35) is fully memory mapped.

IPC 1-7 (main, further and additional classification)

G06F 13/00

IPC 8 full level (invention and additional information)

G06F 13/36 (2006.01); G06F 13/362 (2006.01); G06F 13/368 (2006.01); G06F 13/37 (2006.01); G06F 13/42 (2006.01)

CPC (invention and additional information)

G06F 13/37 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9913405 A1 19990318; AT 310277 T 20051215; AU 8576498 A 19990329; CN 1150460 C 20040519; CN 1301364 A 20010627; DE 69832410 D1 20051222; DE 69832410 T2 20060803; EP 1027657 A1 20000816; EP 1027657 A4 20030409; EP 1027657 B1 20051116; JP 2001516100 A 20010925; JP 4259751 B2 20090430; KR 100572372 B1 20060419; US 5948089 A 19990907

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